The extraordinary death of a fisherman who was snatched from his boat by a leaping crocodile has prompted a coroner to urge authorities to warn boat users of the growing crocodile danger in northern Australia.

Family and friends watched in horror last year as a large crocodile leapt from a Northern Territory waterhole and clamped it jaws around the shoulder and chest of Bill Scott as he stood in his boat. The croc then flipped the 62-year-old into the water and he was never seen again alive.

An inquest into Scott's death ended Friday.

Coroner Greg Cavanagh said Scott might be the first fatality but it was not the first time a croc had tried to take someone from a boat.